Home
Class 9
PHYSICS
You have a block of a mystery material, ...

You have a block of a mystery material, 12 cm long, 11 cm wide and `3.5` cm thick. Its mass is 1155 grams. (a) What is its density? (b ) Will it float in a tank of water, or sink?

Text Solution

Verified by Experts

(a) `"Density" = "Mass"/"Volume" = (1155g)/(12 cm xx 11 cm xx 3.5 cm) = (1155g)/(462 cm^(3)) = 2.5 g cm^(-3)`
(b) The mystery material is denser than the water, so it sinks.
Promotional Banner

Topper's Solved these Questions

  • FLUIDS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS I. Answer the following.|9 Videos

  • FLUIDS

    FULL MARKS|Exercise Activity|1 Videos

  • FLUIDS

    FULL MARKS|Exercise EXERCISE IX. HOTS|4 Videos

  • ELECTRIC CHARGE AND ELECTRIC CURRENT

    FULL MARKS|Exercise ADDITIONAL QUESTIONS (LONG ANSWERS QUESTIONS)|4 Videos

  • HEAT

    FULL MARKS|Exercise Additional Questions (Long Answer)|4 Videos

Similar Questions

Explore conceptually related problems

The density of water is 1 g cm^(-3) . What is its density in S.I. units?

A biconves lens has radil of curvature 20 cm and 15 cm each. The refractive index of the material of the lens is 1.5. What is its focal length? Will the focal length change if the lens is fipped by the side?

A metallic cylinder of diameter 5cm. And height 3(1)/(3) cm is melted and cast into a sphere. What is its diameter.

A thin lens of focal length + 12 cm is immersed in water (mu = 1.33). What is its new focal length ?

A simple microscope has a magnifying power of 3.0 when the image is formed at the near point (25 cm) of a normal eye. (a) What is its focal length? (b) What will be its magnifying power if the image is formed at infinity?

A 2 m-long string fixed at both ends is set into vibrations in its first overtone. The wave speed on the string is 200 m s and the amplitude is 0.5 cm. (a) Find the wavelength and the frequency. (b) Write the equation giving the displacement of different points as a function of time. Choose the X-axis along the string with the origin at one end and t = 0 at the instant when the point x= 50 cm has reached its maximum displacement.

A drum of 40 cm radius has a capacity of 440 dm^(3) of water. It contains 396 dm^(3) of water and is placed on a solid block of exactly the same size as of drum. If a small hole is made at lower end of the drum perpendicular to its length, find the horizontal range of water on the ground in the beginning. Given g=10m//s^(2)